Enable creation of code.py only for full builds

supervisor/shared/filesystem.c

@@ -75,10 +75,15 @@ static void make_sample_code_file(FATFS *fatfs) {
     UINT char_written = 0;
     const byte buffer[] = "print('Hello World!')\n";
 
+    #if CIRCUITPY_FULL_BUILD == 0
+    make_empty_file(&vfs_fat->fatfs, "/code.py");
+
+    #else
     //Create or modify existing code.py file 
     f_open(fatfs, &fs, "/code.py", FA_WRITE | FA_CREATE_ALWAYS);
     f_write(&fs, buffer, sizeof(buffer) - 1, &char_written);
     f_close(&fs);
+    #endif
 }
 
 // we don't make this function static because it needs a lot of stack and we